```typescript index.ts
import { CustomerIoJourneysApp } from 'customer-io-journeys-app-typescript-sdk';

const customerIoJourneysApp = new CustomerIoJourneysApp({
    /*
     * The App API uses a bearer authentication scheme.
     * 
     * You can generate a bearer token, known as an **App API Key**, with a defined scope in [your account settings](https://fly.customer.io/settings/api_credentials?keyType=app). [Learn more about bearer authorization in Customer.io](https://customer.io/docs/api/app/).
     * 
     */
    bearerAuth: "BEARER_AUTH"
})
```